Orkestra doesn’t have a plugins system like you can find in other CD tools with their own store. Instead it relies on jar dependencies and distribution systems like Maven or Ivy.
There are multiple advantages to this system:

  • Since Scala is a JVM language we have access to all the libraries from the JVM community (Scala, Java or any other JVM compiled languages).
  • Installation of plugins becomes code too. So it’s very easy to code review and rollback changes

Talking to AWS

In order to talk to AWS we can use the official Java SDK. Let’s add the dependency to build.sbt:

libraryDependencies += "com.amazonaws" % "aws-java-sdk" % "AWS SDK Version"

Now we can define a function uploadToS3() that we will be able to use in any job:

import com.amazonaws.regions.Regions
import tech.orkestra.filesystem._
import tech.orkestra.utils.BlockingShells._

// We need the implicit workDir in order to know in which directory we are working in
def uploadToS3()(implicit workDir: Directory): Unit = {
  val s3 = AmazonS3ClientBuilder.standard.withRegion(Regions.EU_WEST_1).build()
  val transferManager = TransferManagerBuilder.standard.withS3Client(s3).build()

  // Creating the file locally 
  val file = LocalFile("uploadme.txt")
  sh(s"echo 'Hey!' > ${file.getName}")

  val s3Bucket = "some-bucket-name"
  println(s"Uploading ${file.getName} to S3 bucket $s3Bucket")
  transferManager.upload(s3Bucket, file.getName, file).waitForCompletion()

Sending a Slack message

Let’s try to integrate with Slack. If I Google “slack scala” and hit “I’m feeling lucky” I end up on this Slack client So it seems that someone already wrote a Slack plugin for Orkestra even before Orkestra was born!
Let’s add the dependency to build.sbt:

libraryDependencies += "com.github.gilbertw1" %% "slack-scala-client" % "Slack client version"

And create the sendSlackMessage() function:

import slack.api.SlackApiClient
// Orkestra already uses Akka so we can import the implicits for the Slack too
import tech.orkestra.utils.AkkaImplicits._

def sendSlackMessage(): Unit = {
  val slack = SlackApiClient("slack token")
  slack.postChatMessage("channel name", "Hello!")

You will be able to get the token by creating a Slack app on and then adding it to your workspace.

Their are endless possibilities with the access to all the Java world and this is why Orkestra has been designed from the beginning as code first.
See also the Github Integration, Cron jobs and Locking documentation.